JPH06194077A - Heat-exchanging device - Google Patents

Abstract

PURPOSE:To feed a heating medium from one heating part, and reduce the cost for the heating means by a method wherein a plurality of heat-exchangers are planted in the direction by which a plurality of heat-radiating fins, being arranged in parallel, orthogonally cross with the tube axial, and respective actuating tubes are combined into one pipe at both end sides of a container, and connected to both end parts of pipes by a valve. CONSTITUTION:A high temperature side heat-exchanger 5 is made to be an aggregate of tube type alloy filling containers 17 with a fin 18 which is filled with a hydrogen absorbing alloy. At the same time, on respective tube type alloy filling containers 17, a hydrogen piping and a hydraulic fluid tube as a passage for a heating medium are arranged to go through the tube type alloy filling containers 17. Also, a heating unit 9 has a heater 20, and at one end of the heating unit 9, a pipe 22a is connected with a valve 24a, and the other end of the pipe 22a is connected to one end of the hydraulic fluid tube for each tube type alloy filling container 17 by a branch tube 23. In the meantime, a pipe 22b is connected to the other end of the hydraulic fluid tube, and the pipe 22b is connected to the other end of the heating unit 9 with a valve 24b. Thus, the heating medium can be fed from one heating unit, and therefore, the cost for the heating means can be reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchange device for generating cold heat or warm heat using a hydrogen storage alloy.

[0002]

2. Description of the Related Art In recent years, various cooling and heating devices using hydrogen storage alloys utilizing solar heat or various waste heats and heat exchangers utilizing the reaction heat of the hydrogen storage alloys have been proposed. As one example thereof, Japanese Patent Laying-Open No. 4-55690 discloses a cooling / heating device described below.

In this apparatus, a hollow flat outer wall made of a material having good thermal conductivity is formed so as to connect the outer wall facing surface with each other, and the heating chamber and the hydrogen storage alloy storage chamber are partitioned from each other.
A partition plate made of a material having good thermal conductivity, heating means housed in the heating chamber, hydrogen storage alloy stored in the hydrogen storage alloy storage chamber, and hydrogen storage alloy formed on the outer wall of the hydrogen storage alloy storage chamber. A hydrogen absorbing / releasing device is configured with the releasing pipe.

Further, a plurality of such hydrogen absorbing / releasing devices are stacked, and a heat exchanger is formed by providing fins for promoting heat transfer between these hydrogen absorbing / releasing devices.

As a result, a compact hydrogen absorbing / releasing device which can efficiently supply heat to the hydrogen absorbing alloy is provided. Moreover, a heat exchanger having high heat exchange efficiency is realized by stacking such hydrogen absorbing / releasing devices via a plurality of heat radiation fins.

[0006]

However, each hydrogen absorbing / releasing pipe of the above heat exchanger has a heater as a heating means, which causes a problem in terms of cost.

That is, in a heat exchanger equipped with a hydrogen absorbing / releasing pipe, the hydrogen absorbing alloy filled in the hydrogen absorbing / releasing pipe is heated to release high-pressure hydrogen to another corresponding heat exchanger communicating therewith for regeneration. Conventionally, since a heater for heating was provided for each hydrogen absorption / desorption tube, a large number of heaters were required as a whole, which was expensive.

[0008] Therefore, an object of the present invention is to provide a low-cost heat exchange device for supplying heated steam generated at one place to a large number of hydrogen absorption / desorption pipes.

[0009]

According to the present invention, while a pipe is provided on both sides of a heating part which contains a heater and evaporates a heat medium, one end face of a cylindrical airtight container containing a hydrogen storage alloy is provided. A plurality of heat exchangers, in which the hydrogen pipes are attached airtightly, and the working fluid pipes through which the heating medium body passes through the both end faces of the circular tubular airtight container, are arranged in parallel, are arranged in parallel. A plurality of radiating fins and a pipe axis are planted at appropriate intervals in a direction orthogonal to each other, and the respective working pipes are combined into one at both end sides of the container, and valves are provided at both end portions of the pipe. It is designed to be connected.

[0010]

With the above construction, the heat medium to be supplied to the heat exchange container is supplied from the one heating section, so that the cost of the apparatus can be reduced, and since the heat pipe is used, the heat transfer is quick, In addition, temperature uniformity can be achieved. Also,
Since the heat medium is steam, the loss of sensible heat of the heat medium accumulated in the heat exchanger can be reduced.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments in which the heat exchange device of the present invention is applied to a flower growing system will be described in detail below with reference to the drawings. The flower growing system here is equipped with a heat source that supplies cold heat to the showcase that stores the flowers, in order to supply the most suitable temperature and humidity for the flowers, adjust the flowering time, and extend the life of the flowers. It is a thing.

FIG. 1 is a conceptual diagram of a flower growing system, in which 1 is a housing constituting the outer shape of the flower growing system, and 2 is a housing.
Is an air conditioner that occupies the upper part of the housing 1, and 3 is the air conditioner 2
Normal tetradecane located below

[0013]

[Chemical 1] Regenerator 4kg filled with paraffinic regenerator material containing 4 as a main component is located below the regenerator 3 and is a hydrogen storage alloy A

[0014]

[Chemical 2] The low temperature side heat exchange vessel 5 filled with 9 kg of hydrogen is located below the low temperature side heat exchange vessel 4, and the hydrogen storage alloy B

[0015]

[Chemical 3] High temperature side heat exchange container filled with 9 kg, 6, 7 and 8 are provided near the regenerator 3, the low temperature side heat exchange container 4 and the high temperature side heat exchange container 5, respectively, and form an air flow to be sent to the cooling cabinet 2. A heating unit for supplying heat to the high temperature side heat exchange container 5 in the preliminary mode and the regeneration mode after the cooling mode, and 10 to 16 the cooling chamber 2, the regenerator 3, and the low temperature side heat. This is a damper for switching the communication state between the exchange container 4 and the high temperature side heat exchange container 5 to supply cold or hot heat to the cooling and heating cabinet 2. The low temperature side heat exchange container 4 and the high temperature side heat exchange container 5 are connected by a hydrogen pipe (not shown) having a valve in the middle so that hydrogen can move between them.

Here, the high temperature side heat exchange container 5 and the heating section 9 will be described in detail with reference to FIG.

In the high temperature side heat exchange container 5, a hydrogen pipe is airtightly attached to one end surface of a cylindrical airtight container containing the hydrogen storage alloy B, and both end faces of the cylindrical airtight container are airtight. High temperature alloy filling container 1 as a plurality of heat exchangers having a working fluid pipe penetrating therethrough for passing a heat medium body
7 is a plurality of heat dissipating aluminum fins 18 arranged in parallel
And are planted at appropriate intervals in the direction in which the pipe axis intersects with each other.

On the other hand, in the heating section 9, the heater 20 is arranged in a heating tank in which the heat medium is steam, and the power source device 21 is connected to the heater 20. In addition, a pipe 22a is arranged in the heating unit 9, and this pipe 22a is connected to a working fluid pipe at one end of the high temperature side alloy filling vessel 17 of the high temperature side heat exchange vessel 5 by a branch pipe 23. A pipe 22b is connected to the other end via a branch pipe (not shown), and valves 24a and 24b are arranged on these pipes 22a and 22b.

Further, the heating section 9 is provided with a drainage pipe 27 via a valve 26a and a supply pipe 29 for replenishing the medium via a valve 26b.

Next, each high temperature side alloy filling container 17 is
As shown in FIG. 3, a hydrogen pipe 101 is connected to one end of the hydrogen pipe 101.
A hydrogen filter 103 for circulating hydrogen gas is connected to an upper portion of the hydrogen storage alloy B of each high temperature side alloy filling container 17. At the other end of each high temperature side alloy filling container 17, an alloy filling pipe 104 for filling the hydrogen storage alloy B is provided.
Are connected to each other, and the alloy filling pipe 104 after the alloy filling.
The externally exposed end of is sealed.

A working fluid pipe 105 for heating the hydrogen storage alloy B penetrates under each high temperature side alloy filling container 17, and steam flowing to the working fluid pipe 105 in the regeneration mode and the preliminary mode. As a result, the hydrogen storage alloy B is heated. Inside each of the ends of the high temperature alloy filling container 17 where the aluminum fins 18 are not attached, a ceramic fiber heat insulating material 106 is provided so as to sandwich the hydrogen storage alloy B.

On the other hand, the low temperature side heat exchange container 4 is composed of a plurality of cylindrical low temperature side alloy filling containers 30 connected in parallel, and each low temperature side alloy filling container 30 has a valve (not shown) in the middle thereof. It is connected to the high temperature side heat exchange container 5 via a common hydrogen pipe that it has, and at the same time sucks and exhausts hydrogen gas.

The low temperature alloy filling container 30 is shown in FIG.
As shown in FIG. 3, a hydrogen pipe 101 is connected to one end of the hydrogen pipe 101, and a hydrogen filter 108 for flowing hydrogen gas is connected to the hydrogen intake / exhaust hole 107 of the hydrogen pipe 101 substantially at the center of the hydrogen storage alloy A. ing. The hydrogen filter 108 is formed of a porous filter made of sintered metal, glass wool or the like, and hydrogen gas is filled with the alloy filling container 3 for each low temperature side.
It is designed to be evenly distributed from the beginning to the end of 0.

At the other end of each low temperature alloy filling container 30, an alloy filling pipe 109 for filling the hydrogen absorbing alloy A into each low temperature alloy filling container 30 is connected. The external exposed end of the filling tube 109 is sealed.

Next, the operation of the flower growing system having the above structure will be described with reference to FIGS.

[Cooling Operation] In the initial state, the hydrogen storage alloy in the low temperature side heat exchange container 4 is in the state of a metal hydride combined with hydrogen. The hydrogen storage alloy in the low temperature side heat exchange container 4 has a hydrogen equilibrium pressure higher than that of the high temperature side heat exchange container 5 at the same temperature, and when the valve of the hydrogen pipe is opened, hydrogen is dissociated from the hydrogen storage alloy A. Hydrogen storage alloy B
Move to.

In this operation mode, the low temperature side heat exchange container 4
Since it becomes an endothermic reaction, on the other hand, since it becomes an exothermic reaction in the high temperature side heat exchange container 5, cold heat is generated in the low temperature side heat exchange container 4 and warm heat is generated in the high temperature side heat exchange container 5. At this time, the states of the dampers 10 to 16 are, as shown in FIG. 5, that the damper 10 is oblique, the dampers 11 and 12 are vertical, and the dampers 13 to
Reference numeral 16 is horizontal, and the low temperature side heat exchange container 4 and the high temperature side heat exchange container 5 are thermally separated. Also, fan 6,
All 7 and 8 are started to rotate.

At this time, the cold heat generated in the low temperature side heat exchange container 4 is supplied to the cold storage 2 (shown by the arrow a) and the regenerator 3 via the duct 31a as shown in FIG. While cooling, the excess cold heat circulated between the regenerator 3 and the low temperature side heat exchange container 4 is accumulated in the regenerator 3. Also,
The heat generated in the high temperature side heat exchange container 5 passes through the duct 31b and is discharged to the outside air from the exhaust hole 32.

Then, after the above-mentioned cooling / heating mode is performed for a predetermined time, a preliminary mode is performed to shift to a regeneration mode described later.

In the preparatory mode, as shown in FIG. 6, the dampers 15 and 16 are rotated to a vertical position where the high temperature side heat exchange container 5 and the outside air are shut off from each other. Also, the high temperature side heat exchange container 5
The valve of the hydrogen pipe connecting the low temperature side heat exchange container 4 and the valve is closed.

Here, when the valves 24a and 24b of the heating unit 9 described in FIG. 2 are opened, the working liquid vapor from the heating unit 9 is exchanged by the pipe 22a through the branch pipe 23 by the action of the heat pipe. It flows into the container 5. In the high temperature side heat exchange vessel 5, steam flows from one end of the working fluid pipe 105 provided in each high temperature side alloy filling vessel 17 shown in FIG. 3 to warm the hydrogen storage alloy B and from the other end of the working fluid tube 105. It flows out and is recovered from the pipe 22b. This state is performed for a predetermined time, and the hydrogen storage alloy B in the high temperature side heat exchange container 5 is brought into a high temperature and high pressure state.

In this case, in this embodiment, since the heat medium to be supplied to the high temperature side alloy filling container 17 is supplied from the single heating section 9, the cost of the apparatus can be reduced, and the heat pipe is used. The heat is rapid and temperature uniformity can be achieved. Since the heat medium is steam, there is an effect that the sensible heat loss of the heat medium staying in the heat exchanger is small. In addition, the working fluid is circulated in a free fall system, and the high temperature side heat exchange container 5 is used.
It is preferable to slightly lower the side from which the working fluid flows out.

After the above preliminary mode is performed, the following reproduction mode is performed.

[Reproduction Mode] After the completion of the above-mentioned preliminary mode, the dampers 11 and 12 are rotated to make the duct 3 of the refrigerator 2.
Block 1a. At this time, the hydrogen storage alloy B in the high temperature side heat exchange container 5 has a hydrogen equilibrium pressure higher than that of the hydrogen storage alloy A in the low temperature side heat exchange container 4, and when the valve of the hydrogen pipe is opened, hydrogen is absorbed from the hydrogen storage alloy B. Dissociates and hydrogen storage alloy A
Move to. Also in this case, since the temperature is lowered due to the dissociation of hydrogen from the hydrogen storage alloy B, the heating unit 9 to the valve 24
The heat medium (working liquid vapor) is supplied to the high temperature side heat exchange container 5 in a state in which a and 24b are opened.

In this reproduction mode, as shown in FIG.
The low temperature side heat exchange container 4 is thermally separated from the cooling compartment 2 by horizontally switching the dampers 11 and 12, and at this time, the cold heat from the regenerator 3 is supplied to the cooling and heating compartment 2 (shown by an arrow c). ). As a result, the refrigerator 2
While cooling the inside, the heat generated by the heat generated in the low temperature side heat exchange container 4 in which the hydrogen has returned is released to the outside air via the duct 31c. The dampers 15 and 16 are vertical.

In this embodiment, the case of cooling is explained, but the heat exchanger of the present invention can be applied not only to cooling but also to heating. In this case, a heat medium is supplied to the heat exchanger from the heating section and the heat generated by the heat exchanger is used.

[0037]

As described above, according to the present invention, since the heat medium can be supplied from one heating section, the cost of the heating means can be reduced, and the heat transfer can be achieved because the heat pipe is used. It is quick and can achieve temperature uniformity.

[Brief description of drawings]

FIG. 1 is a schematic view of a flower growing system using a heat exchange device according to an embodiment of the present invention.

FIG. 2 is a schematic diagram showing a configuration of a high temperature side heat exchange container and a heating unit of the embodiment of FIG.

FIG. 3 is a cross-sectional view of a main part of a high temperature alloy filling container used for the high temperature side heat exchange container of FIG. 1.

4 is a cross-sectional view of a main part of a low temperature side alloy filling container used for the low temperature side heat exchange container of FIG.

FIG. 5 is an explanatory diagram showing the operation in the cold heat mode of the flower cultivation system in FIG. 1.

FIG. 6 is an explanatory view showing an operation in a preliminary mode of the flower cultivation system in FIG.

7 is an explanatory diagram showing an operation of a reproduction mode of the flower cultivation system in FIG. 1. FIG.

[Explanation of symbols]

 2 Refrigerator 3 Regenerator 4 Low temperature side heat exchange container 5 High temperature side heat exchange container 6, 7, 8 Fan 9 Heating part 10, 11, 12, 13, 14, 15, 15, 16 Damper 17 High temperature side alloy filling container 18 Aluminum fin 20 heater 21 power supply device 22a, 22b pipe 23 branch pipe 24a, 24b valve 30 low temperature side alloy filling container 31a, 31b, 31c duct

Claims (1)

[Claims] 1. A pipe is provided on both sides of a heating part which contains a heater and evaporates a heat medium, and a hydrogen pipe is airtightly attached to one end surface of a circular tubular airtight container containing a hydrogen storage alloy, A plurality of heat exchangers each having a working liquid tube through which a heat medium passes through airtightly penetrates both end surfaces of the circular tubular airtight container, and a plurality of heat radiation fins and tube axes arranged in parallel are provided. Plant at appropriate intervals in the orthogonal direction,
A heat exchange device, characterized in that each of the working pipes is connected to each other at both ends of the container and connected to both ends of the pipe via valves.